The oldest tends to be self-assured, responsible, a high achiever, and relatively serious and reserved.

最年长的那一个往往自信、负责、成绩优异，也相对严肃和保守。

youdao

But the therapy also has relatively serious risk, some complications are even fatal.

但这些治疗同时也有较大的风险，有些并发症甚至是致命的。

youdao

The west belongs to the heavy disaster area in our country, where man-made disasters are relatively serious.

西部属于我国重灾区，而且，人为灾害相当严重。

youdao

"because the virus can spread rapidly, but what we're seeing so far is a pretty stable position as far as the virus is concerned, it's producing relatively mild illness in most people, but in a small proportion it's causing serious problems and we have in place the plans in our health care system to deal with those problems,".

VOA: standard.2009.07.31

This used to be done only for some serious or relatively rare problems, or surgically if a patient was having an operation for another heart issue.

NPR: Heart Repair Breakthroughs Replace Surgeon's Knife

She said it was "a real blessing" that the injuries were relatively minor, the most serious being a fracture.

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The most serious concern involves relatively rare allergic reactions.

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